Optical illusions show how we see | Beau Lotto

[@UrbanOutlawsSk8Co]

Beau's appearances in Brain Games opened my eyes to perceptual psychology. Such an amazing field of study.

[@richardsmith6083]

I'm blind, did I miss anything?

[@danjbundrick]

"The brain didn't actually evolve to see the world as it is. Instead it evolved to see the world as it was useful to see in the past." Fascinating and profound.

[@TonusFabri2024]

What I think is the most amazing property of colour vision, which he just touched on indirectly, is that we can perceive the colour of objects more-or-less correctly independent of the colour (temperature) of the incident light, by the average colour context. Look at a flower outside in the sun: colour temperature 6500 K. Take it indoors, look at it under an old-fashioned incandescent light, colour temp 2400 K: it will appear the same colour! Not to the camera, unless you adjust it (or unless it's a very sophisticated one). Scientific American covered this in the 60s, when the research was new; I'm still amazed by it.

[@jameshitchen8250]

It is my understanding that the reason you see the two identical desert scenes as two different shades after looking at the red and green sides is that the cone cells in the eyes have not had time to recover. Typically humans have three types of cones for the three primary colours of light, red green and blue, and therefore three different forms of iodopsin (some have more, some have fewer). The relative levels of iodopsin stimulation results in the subtleties and gradations of colour we see. Iodopsin takes a little time to reform, and when the eye is subjected to the same colour for an extended period of time there is no chance to do that and a greater percentage of iodopsin is stimulated, which results in a sort of plasma burn-in of the eye, where the signal is not being sent even when the colour is present. In this case, the cells where the green and red light were focused while looking at the screen have momentarily lost the ability to see green and red as fully as usual, hence the right hand side looks less red and the left looks less green. I would class this effect as occurring in the eyes and not the brain "learning" as this guy claims, but others may disagree.

[@Harm10412]

+James Hitchen Well, on that particular example, you're probably right. I had quite an afterimage after staring at the red and green. But (see wikipedia): Newer evidence suggests there is cortical contribution as well.

[@drd1924]

I'd agree, the eyes were overwhelmed and then undercompensated afterward which is why the colors flipped. (Could no longer perceive red on the right and saw green)

[@DeansVideoClips]

I disagree. The brain calibrates itself in all kinds of ways not just visual... I once spent an hour bleaching a bathroom... after a while I could no longer smell bleach as my brain calibrated but when I went outside the fresh air smelt pungent and took a while to smell normal - the brain adjusted itself for the bleach and then had to adjust back for the fresh air. There are so many ways the brain does this in fact it is doing it all the time and we don't notice. Let's take music for example... a song has a melody and a chorus... the song needs the melody to make the chorus stand out... suspense and release in music and movies - the more suspense there is the bigger the action is when it happens as the brain calibrates down... someone who always wants more will always want more no matter what they get because the brain calibrates itself to still want more once the new level is achieved... Bad news... if there has been no bad news for a long while then when some bad news comes it's really a shock... if there is a lot of bad news then the brain calibrates itself until something really bad happens... this is why things appear cyclical often they are not but our brains perceive it that way.... There are lots of other examples but I need to finish my dinner :-)

[@drd1924]

Makes sense how the brain calibrates itself. I went shooting this one time and the smell of gunpowder the whole time overpowered everything else Later, I passed gas in the truck and what do you know....smelled just like the gunpowder from earlier...a nice change actually.

[@jesse4238]

James Hitchen So what does it mean if I dont see any difference between those pictures?

[@owlgrandecity]

Blue: "Have a nice day!" Orange: "Thanks! You look wonderful, by the way!" COMPLIMENTARY COLORS

[@larrypass6720]

I'm stealing this.

[@lineikatabs]

The desert experiment around 6:30 had the opposite effect on me. My brain switched the red and green and I saw the left half as red and the right half as green. Weird, eh? Anyone else experiencing this?

[@brunocruz430]

Me too

[@Shmiguelly]

I was just about to comment this. That's so weird.

[@lineikatabs]

***** that's not what the lector said. he said exactly the opposite. I'm supposed to see the left as green and the right as red, not the other way around.

[@valencys]

***** No he didn't, I just relistened to check and I would really like you to tell me where because I heard no such thing. He said the right is under red illumination and the green is under green illumination. That's all he said, and it makes sense if you read the post of the guy above you.

[@lineikatabs]

Valencys exactly. and the opposite is happening to me. for me it the LEFT one is under RED and the RIGHT one is under GREEN. question is: why?

[@From_goldy]

2019 cheeyaaaa, I legit thought you meant the positions of the colours, if anyone did, did you also pick the right bottom corner grey circle?

[@DEV3N87]

Yeah, paused the video picked out the dot thought about it pressed play... got disappointed and went to the comment section.

[@TheMarbo74]

Horribly explained..

[@liteRunner10]

that guys shirt in unbuttoned to a disturbing degree

[@ericsbuds]

+liteRunner10 I was gonna say, I wonder if he could do up a couple of those buttons xD

[@desromic]

+liteRunner10 Just... one more button... one more.... please -_-

[@obscure.reference]

+liteRunner10 Robinson Crusoe

[@picitnew]

I really didn't notice that :) But then I usually do not care what people are wearing.

[@epanecka]

Yeah, that took me out of this a little bit.

[@ocarinafrek]

at first i thought he ment position of the dots

[@010neji]

haha me too

[@t.a5587]

Same

[@MikeGreenwood51]

Same

[@Richard_Nickerson]

In which case the answer would still have been grey

[@YourPalHDee]

Yeah, he didn't make that clear AT all.

[@pptmorrow]

This whole thing felt like he woke up 15 mins ago and realized he had a Ted talk

[@anaphylastiks]

The grey one was not in the same place on both boards, I thought that was what he meant.

[@kokas466]

+Chris Dealny Yeah me too.

[@MikeGreenwood51]

Same.

[@coreycox2345]

Same here, Chris Dealny. I was solving the wrong puzzle.

[@RG7621]

Me too

[@BamaJayHayes]

Same here...

[@alkh3myst]

Oh, isn't this great! A video on optical illusions in 480p. Congratulations, TED!

[@MrNucleosome]

As you may have noticed, it was the year 2009. We didn't know what HD was back then, sorry.

[@kelleejackson2431]

I think the illusion is here is that everyone is acting like they know so much when they weren't invited to a ted talk but he was. This guy is helping treat blindness, he might even cure it one day. He is very inspiring and doing some good in the world more than you guys can say for yourselves.

[@kokas466]

Did someone else see the colors inverted? Green on the right desert and red on the left?

[@waterbottleyea]

+Mc Kokas I did, idk if thats normal or not lol

[@kokas466]

+Sarah I believe you have "inverted vision". Our right eye works as our left and the left one works as our right. If you scroll down the comment section, we'll see that someone talked about this.

[@pajenja]

+Mc Kokas me too :S when he said green on left and red on right i was like ¨wtf i'm inverted¨ what could that be?

[@kokas466]

Badi I don't know for sure, but its nothing for you to worry about! :)

[@Yadobler]

+Mc Kokas i may be wrong, i did not get to watch the video fully, but my guess would be your brain saying, oh your right eye has too much red so the red-detecting photoreceptor beomes tired (so u do not see the red anymore in the pic, so it looks green) and vice versa

[@SonnyGTA]

I SEE THE CAMERAMAN ON STAGE!!!! Was that part of the illusion?

[@lilrask9464]

He just needs to rock a thick Gold chain would've completed the outfit 😂

[@TonyHulk]

That whole time he never explained how he got his chest so smooth??

[@aununally4274]

@@revelutionx12p hahah lol

[@iambiggus]

Interesting. I paint and do work using a lot of colors, and I had no problem in the first test. The grays still looked like a different shade, but the colors seemed obvious. I wonder if that's something that can be sorta trained into you.

[@ImHeadshotSniper]

this is an incredibly compelling Ted talk, and i'm curious as to why there were a reasonably high number of dislikes. (for anyone who can't see them, you can get the "Return youtube dislike" extension from Chrome or Firefox extension stores)

[@funbooster8584]

conversion of light into sound is just amazing

[@carwyn3691]

7:18 That's the first time I've heard someone explanaining this optical illusion in an understandable way.

[@PickyMcCritical]

Agreed.

[@nikheil1]

Fernando Batista completely agree

[@MrMineheads]

for some reason, i can't seem to see the difference between the desert scene

[@theali8oras274]

This is brilliant , I was blind to that perspective

[@dr.c196]

I was blinded by the unbuttoned shirt...

[@LastLasse]

Context is everything - and so are buttons

[@MeguVusion]

I'm a sucker for watching these videos... Can't stop the video.

[@spot1401]

That is the kind of wardrobe you choose when you would much rather walk around naked like at home

[@majinmilad]

I love this comment

[@sparkal75]

She’s totally naked under those clothes!

[@Joenasr]

9:20 Maybe that's how the quatum world is being read... that's why we re still getting 2 answers at the same time!

[@dejffjed]

Quantum mechanincs is exactly the case where our limited perception of the world (be it via our own senses or using machines, gauges etc.) is letting us down. And it's the same reason why we will never get past a certain line of understanding because we are always trying to understand using evidence which is dependant on that limitation.

[@Joenasr]

@@dejffjed Exactly!!!.. but I believe that there shall come a time we'd grasp all those phenomena.

[@46monkeyes]

Confusing....Also, button your shirt.

[@neosthirdeye2291]

Lmfao😂😂😂

[@shawzy620]

2009, that was the style

[@shreenikethanv6241]

That's none of your business.😁😂

[@syedbaqir2687]

​@@shreenikethanv6241 That's optical illusion. it is actually buttoned xD

[@UrbanOutlawsSk8Co]

If it was confusing, you should have paid less attention to his outfit

[@WellbredNfedKembleTV]

I'm not saying he's been tweaked & awake for a day or two -he just looks, sounds & acts like he has. SLOW DOWN please. I had to keep pausing or repeating certain bits to see what everyone else was seeing. FINALLY I played it at .75. WORKS!! A POINTER would go a long way in directing viewers to exactly which bits objects he's referring to.

[@TheHiredGun187]

I nailed that pic of the panther in the black and white...the even amount of space between the eyes and the glare off the eyes drew my attention to that spot not quite immediately..but within the first 3-5 seconds

[@verticalhorizon4633]

This man is fascinating. What he will be able to accomplish in his work.

[@Rodrig79863]

I used a color picker chrome extension on that last illusion and those colors are not the same. in the first sqaures the color was #CB7D77 and in the second squares it was #BC7A6B

[@coolfuzzycats]

ok but that wasn't the point of the illusion. You should have used your color picker to see see if the squares changed after he took off the frame

[@DriscolDevil]

@@coolfuzzycats you're both wrong.

[@MrKabDrivr]

@Vilesentry But under a different light, they are both right!

[@DriscolDevil]

@@MrKabDrivr nah, just me. Trust me, I'm a doctor.

[@thomasgroov3r]

"The brain didn't evolve to see the world the way that it is...It evolved to see the world in a way that is useful."

[@Mick0722MX]

What an idiotic statement.

[@acrojen03]

The last “illusion” is something artists use consciously. It is a form of contrast. (Not sure what it’s called in English though.) The outside colour makes the colour inside look slightly different, because colours get affected by the colours beside them. Just like with the light/dark contrast where a dark colour looks darker next to a bright colour and likewise. (I learned a little about this in like 6th grade or something, so I don’t really remember much...)

[@justforfun2297]

Simultaneous contrast, if you haven't figured out yet xD

[@acrojen03]

@@justforfun2297 Why, thank you. I did, in fact, never find out the english term for it. XD

[@peters2575]

I too am color blind, so of course many examples were lost, but not the conclusion. In fact, Beau Lotto should have included the perspective of a color blind person to make his point, in particular, how we apply his insights for one particular daily survival challenge, traffic lights. The green light looks white, and yet all of you are safe when we drive -- all because of his observations of how we learn to perceive what is useful.

[@debajyotisg]

Still dont see the difference between the desert images

[@LukeMettamGaming]

for me the image below the green square was red, and the image below the red square was green.

[@apllo2701]

same

[@MikeGreenwood51]

To Debajyoto Sengupta Did you focus on the white spot for about 30 seconds. 10 seconds may not be enough.

[@ericaz6249]

Same here I tried a few times

[@jasperqueen3676]

Are you colour blind by chance?

[@GamePlayer0105]

I'm still confused about the blue and yellow tiles being gray.

[@Radonatos]

Yeah, that was the hardest one to "see right". So I took a screenshot, copied them next to each other in Paint, and... ... they were both the same gray.

[@drd1924]

in nature...grey absorbs (so reflects) its surrounding light...this is how rabbits hide. Deer hide the same way.

[@Mattkylac]

every time the camera turn to him, he unbutton one button

[@brugmansianoncorpus7009]

very similar concepts i have been coming across just working with vintage/retro computer graphics, cubic colour palettes, colour opposites and dithering etc

[@sophdog1678]

The red and green sections started overlapping after a while staring at the upper dot. To put it another way, I would see a thin red vertical stripe move into the green sector, and then alternate to a thin green vertical stripe moving on to the red area. Definitely saw two different desert colours when commanded to look down though.

[@Jayspale]

The dress is blue and black. Period.

[@SirSamsamchannel]

I saw blue and gold, and that isn't even an option :(

[@cdscirque]

i'm so mad, i know it's fucking blue and black, but i see it gold and white, i'm screaming!!

[@SirSamsamchannel]

***** I would high-five your mom right now if I could, my whole family sees white and brown?!

[@ohsnap401]

***** I think it is gold and blue too :D

[@mihax209]

CZÄR Njgagaga Same here, that's also the actual color in the particular photo if you check the rgb values.

[@DaedricNZ]

This guy looks like he just got out of bed and came straight to this presentation

[@fjhaydn6047]

I like it

[@fjhaydn6047]

I am so doing that at my next presentation. I don't care if I get zero in that assessment.

[@fjhaydn6047]

@Bitwise Magick cool!

[@abdullahsaid8561]

​@Bitwise Magick his dress was an illusion

[@twodogzdogue8710]

Good on him for being in casual dress. We all don't have to conform surely? Do people get offended so easily just by a man's shirt undone? What hope do we have if everything has to be so particular. I thought what he was speaking about was what was important but I'm a casual dresser 😂 please don't run me down for being a person with casual dress sense. 😬

[@jesse4238]

Someone who is not affected with the desert experiment around 6:30 ?

[@jesse4238]

@KLJF sweet

[@SniperLogic]

I was not affected at all, whatsoever, by that illusion. Never have been.

[@jesse4238]

@@SniperLogic Did you figure out why?

[@catkeys6911]

I found this fascinating, and this Beau Lotto is so clear and concise in his explanations, and he's a great teacher - I can't believe some of you guys down there- who the f CARES how he buttons his goddam shirt??!?

[@imoxygn5757]

At 8:00 pause the video and try to see the shadow of Rubic Cube and the check boxes attached to it. You will see the boxes inside the shadow moving. Amazing 😘🙌🙌

[@riKringkast]

"There is no inherent meaning in information." Well that really depends on your definition of "meaning". You could be talking about pragmatic meaning, semantic meaning or semiotic meaning, each with different criteria.

[@slomopanic]

Didnt you prove his point with your own example? :P

[@JacobMoen]

You might want to look up the meaning of "inherent". Perhaps you have, six years later, but it's worth trying. ;)

[@TheJCFan]

"I leave you with this: Is my shirt really unbuttoned or is it just an illusion?"

[@AbhishekSanyalTGV]

This is such an underrated comment! XD

[@HighestRank]

Abhishek Sanyal my app does not tally thumbs down, does yours?

[@AbhishekSanyalTGV]

@@HighestRank No, it doesn't in my case either. There are no thumbs downs. But I would want this comment to have more thumbs ups than it currently has

[@mithuraveendran8699]

the benefit of this for visually impaired should be researched more. I hope we could in reality translate images to sound so the visually impaired can feel the world like any of us.

[@nuriagiralt617]

The visually impaired cannot "feel the world like any of us". You cannot "feel" the world like the visually impaired do either.

[@keehaag]

The reason is that when you look at the colors, the right side of your visual field sees red and the left side sees green. What your brain does is subtract those colors from the scene, so you would be able to better detect any subtle details that were otherwise invisible. When you look at the desert, your left is still taking away green, and your right is still taking away red, and since green and red are opposites, you see red on your left and green on your right.

[@curtcoller3632]

Starting with the DESERT SCENE it's getting excellent. So I would just excuse you guys for being "nervous" in the beginning

[@cakeface03]

When I looked at the deserts, the left looked red, and the right one looked green.

[@thumper5832]

Naked Chest: *Does card trick. Audience: "Wow!" Naked Chest: "Your whole life is a lie!" Audience: *Applause

[@HighestRank]

Thumper see: Scotty Kilmer’s book, ‘You’re Doing it All Wrong’.

[@treborsf]

For the love of god, please just do up one more button! Two would be better!!

[@bipolargamechanger]

For some reason I knew that the comments would be about his shirt.

[@zippL0ck]

you need to look at the bottom dot when you look down though . just try it a few times , it will work .

[@SaphiraBjartskular99]

We had a TED talk in science camp. Delightful how i discovered another one of them by accident xD

[@Totalavulsion]

The only concerning optical issue here is the amount of chest on display

[@bingola45]

Perhaps he's One of Them...

[@9faris3]

Here is another key : a bee will inform other bees when it found a nectar in an area. They love to share which is what human should learn from them. Sharing is caring my friend. Of course, not everything can be shared. For example, you can't share your wife with other men unless you are dead or got divorce with her and she wants to marry another man and that is not even called sharing but just a normal woman can do if her husband has died or she got divorced.

[@valencys]

I love you. I don't know why, but I love you.

[@moyga]

You could share your wife with other men even if you're not dead or divorced, you just don't want to.

[@ctakitimu]

It doesn't even have to be with other men for it to be sharing

[@tonestones9445]

What poorly worded first question.

[@EvCW]

Tone's - 'Tones'. Speak for yourself

[@AbhishekSanyalTGV]

I agree! I was looking for dots with the same position

[@stervenmealey1097]

@@AbhishekSanyalTGV yeah same, I paused it for a while lol

[@HighestRank]

Sterven Mealey I understood the incongruous logic immediately because it was useful to have done so in the past.

[@HighestRank]

Ev. CW what *a poorly-worded first response.

[@LogicalLove13]

I'm glad I can see the panther.

[@danielsheets6841]

the red and green desert scene flipped for me, twice!

[@matthewkeen3478]

This was very informative. I'm also colorblind and no, this wasn't fun but definitely informative.

[@secutorprimus]

5:50 For me, the right one was green, and the left was red. Uh... what?

[@tomdooley6713]

I don't know if the talker expressed himself properly but notice he says "the right one is still under red light" not that the right one should be red. What he might not have gotten across fully is that, when looking at something saturated in red light, you start seeing things as relative to that red. ie. You see the desert as less red (and, therefore more green) than the solid red that has become "your new normal." TL:DR Inverted is how it should be.

[@jubuttib]

Yes, it's like white balancing. To a camera that makes (sorta) absolute measurements of the light coming into it a white piece of paper will look dramatically different under light sources of even slightly varying color temperatures, but your visual system compensates for that and try to show it to you as it would be under white light, making it look "white" to you. So even if you're under very warm (reddish) lighting, the piece of paper will look more or less white to you (it'll look less red than the lighting should make it), and vice versa for cool (blueish) lighting. So indeed if your brain expects the right side to be under red lighting, your visual system will compensate and make the image look less red, and as a result more greenish. Same for the left side, your visual system expects the scene to be under a green light, and compensates to what it would look like under a whiter light, making it look more reddish.

[@HighestRank]

For me neither one existed as a desert because in my ecology there doesn’t exist red or green sand.

[@mrt9781]

This guy looks like he’s just been rescued off a deserted island.

[@sparkybob1023]

lol

[@richardsmith6083]

Maybe only partially successful rescue...

[@jamesrobin9961]

This was mesmerizing!! And I cant remember the technical or its name, but kept thinking of a very rare condition/syndrome etc, were were people claim to be able to see sounds, or smell colors, see smells, etc? I cant remember what its called...or I may be just going crazy? Great video!

[@leevclarke]

I think the word you're looking for is synaesthesia. :-)

[@neilmcmahon]

There is a capacitive effect in the retinal cells, so they get 'charged' with the 'colour' (radiation frequency) of an object. The discharge rate of this capacitor is like a 'memory', so your eyes are temporarily remembering the light colour they are exposed to. When you charge them up with a certain colour, this gets translated into the next image you look at.

[@JustTerrified]

why did the left desert one look red for me if red was on the right, vice versa?

[@dennisvds5024]

+Kayla Anderson i had the same. i was a bit confused too

[@NomyNomyNomNom]

Your brain perceives that left side as illuminated by green light and the right side as illuminated by red light and then adjusts the images to match that information

[@PickyMcCritical]

The colors only swapped like that because green and red are complimentary colors. If the squares were green and blue, the bottom would've looked red and orange because your mind would apply extra red to compensate for the excess green and orange to compensate for the excess blue. By using green and red, your brain compensated with red and green, for a reason not dependent on the other side.

[@florisr9]

The brain has nothing to do with this. The red and green cones get overstimulated, making them less sensitive to those colors. If you look at the desert, the red cones fire less actively on the right scene, and the green ones less active on the left scene. It's the same thing when you look in bright light, and go into a dark room afterwards. You can't see because the rods are overstimulated.

[@CreativeWorkflowHack]

Imagine what things exist that we can simply not sence.

[@richardyes8787]

"We can only see about 1% of our surroundings, of what's really there. If we took away everything we can see (matter we are able to perceive) like the stars, the galaxies, the light... universe would essentially remain the same. Everything we see is irrelevant for the functions of the universe." - Lawrence Krauss Plus: he also mentioned how scary this fact is

[@prefusion1973]

1:20 Stefan Sagmeister

[@LordMcMPA]

4:23 I think he should say: there is no inherent meaning in data. There is inherent meaning in information. And what he's aiming at is actually knowledge, which is information set in a context.

[@LOOregano]

The optical illusion with the giant rubix cube was a good example of what he was talking about. However in other areas he seems to be misleading a bit to get across a philosophy. For example the desert scene is an effect of the physical senses (rods and cones) being fatigued (google eye fatigue and rods and cones). This reminds me of the one hand in cold and the other in hot then put both hands in luke warm and you will perceive a relative temperature difference. Also putting a filter over another color is actually changing the color that reaches your eye. Your senses are picking up a change in wavelength.

[@benji.B-side]

That unbuttoned shirt needed a medallion.

[@RonWylie-gk5lc]

It used to be the case that the more intelligent a person was their dress code disappeared lol, this man loved what he does, and he doesn't need to waste a single second on clothing choice

[@fhhfhdfdhhdhhdfhdf138]

a businessman has zero intelligence

[@Ethan23544]

Lol at the start when everyone said grey but he said it was an even split

[@brandonkelley6500]

May Floydweather I noticed that too. 80% gray (which he said interesting) the rest of the colors were barely evenly split

[@georgeb.wolffsohn30]

This reminds me of my color classes in art school.

[@MegaJasonic]

Life and experiences are all unique to each persons perspective.

[@LarryFisherman5]

that 6 year old child song was creepy

[@alevine1951]

Why would he be giving a TED talk with his shirt deliberately half unbuttoned and displaying a hairless chest?

[@videonikita]

I know right, how hard is he trying to get laid?

[@UrbanOutlawsSk8Co]

Smart people don't care about what they wear, they are busy thinking about things that matter

[@alevine1951]

@@UrbanOutlawsSk8Co I hope you're not implying that you are one of the "smart people," because you certainly don't sound like one. "Things that matter" happens to include things that people do and the way they behave. And every behavior and action has a reason. There's a reason he dressed completely inappropriately for the occasion; he didn't come out on stage to give a prestigious TED talk just accidentally leaving his shirt half unbuttoned and his chest exposed. It's very curious, and only a dullard wouldn't notice and wonder about his motivation. You sound more in the "dullard" group than the "smart people" group.

[@alevine1951]

@@videonikita What did YOU think about his smooth hairless chest, Nikita? :)

[@Animebryan2]

Because masters of illusions (magicians) use distractions to fool you & that's why it seems like magic. Its a distraction to fool your eyes & mind into focusing on it instead of what's really going on...

[@chadcudney9088]

All of his buttons are buttoned,,it’s one of his illusions

[@richardsmith6083]

It's a half and half shirt- half buttons and half velcro. They just forgot the velcro.

[@trinitylovell6905]

The illusion and what not is interesting but I am more impressed with the technology that could scan and translate real time color to sound... I’m an artist and would love to use that technology!!!!

[@lapeciq]

Did anyone else saw green lit desert scene on the right side and red lit desert on the left, like they were flipped?

[@Stanley.77]

Colored dots? Excuse me sir, but in 2019 we call them "dots of color!"

[@jayt7178]

Stanley Lubarski no

[@peejm1424]

LOL

[@Stanley.77]

@@jayt7178 *peej m* gets it.

[@RodmanShah]

Why.... is his shirt unbuttoned so low?

[@zzdoodzz]

Cuz he is a badass optical scientist.

[@syedbaqir2687]

​his shirt is optical illusion too. it is actually buttoned xD

[@ahauc730]

Your eyes are still seeing green on the left and red on the right, but because the images on the bottom are colored, it changes it. It inverts them. For instance, you can open up MS Paint on your computer, and fill the space in with the color red. Then, press Control+I (which inverts the colors), and you'll see the red change to, I think, blue. That's pretty much what's happening with the thing you saw in the video.

[@hybridwolf66]

best Ted yet.

[@mrorange90]

See you think his shirt is unbuttoned, in actuality, his fly is down.

[@Jason_Van_Stone]

🤣

[@InsprationalInsight]

I saw red on the left side and green on the right side. What is going on?

[@mohamadsahili6014]

me2

[@mohamadsahili6014]

if ur left handed tell me i think it has somethin to do with that

[@InsprationalInsight]

no, I'm right handed. Although I play baseball and bat sports as lefty.

[@poephila]

That is normal. If you look intensely at an image, your brain will see it again in negative, and red and green are color opposites. Try googleing "afterimage optical illusion", and try it with one of those scary-looking blue characters. The result is pretty awesome :)

[@davebenny9523]

Couldn't watch past 3 minutes. OCD took over demanding one more button.

[@Shades_of_White]

I love this comment

[@13donstalos]

Lmao

[@DriscolDevil]

You didn't miss anything. Classic Ted talk, guy talks in a calming tone and "wows" the audience without saying anything with any substance.

[@djsinorway]

That's correct.. Would be amazing if You had experienced it the other way around.. When looking at the green/red fields, those colours are cancelled out by Your brain looking at the two deserets again, leaving the impression that You are seeing, or rather experiencing the sight of the pictures without that particular colour, Your brain sees it as red/green inbstead of green/red..

[@manuell3505]

1:10 I think that's logical because grey is not a color but only a balance between light and dark. It's the hardest to hide any difference in it, since the neurological (?) misleading effect that happens while looking at different real colors doesn't affect the sight of clean grey. Most people would see it instantly, what would destroy the challenge.

[@djmaxxsaint]

His attire is an illusion. I think he thinks he is well dressed for the presentation. LOL

[@HighestRank]

DJ Maxx Saint the light makes him look like he’s wearing a suit- tailored to expose a lot of skin, but I’m not fooled by holographic fakery.

[@shakeelmalik8462]

He's dress up like he's got beaten up in the pub on the way here

[@theali8oras274]

And you comment as if you re a shallow person

[@shakeelmalik8462]

@@theali8oras274 stop talking rubish!

[@SuupOnYT]

Why is every one insulting the man watch without judging and respect the work he has done ffs

[@grystle3091]

Maybe it was because I wasn't physically looking at the "illusions" but they didn't seem to fool me when they were suppose to. But his point is still well made. Hopefully they make some sort of exhibit at a science museum so I can see if they actually trick my eyes.

[@DontTouchMyCroissant]

That's the point. It's like your brain is saying "there is red lighting in this area. So the thing you look at is not actually /that/ red." To compensate for the red lighting, the brain "takes away" some of the red. And because green is the complementary color of red, it looks more green.

[@CJAwesome83x]

His excessively and unecissarily unbuttoned shirt bugs the hell out of me...

[@Armada8YT]

Is that a pun?

[@ekstenth]

it's an illusion

[@ft.shandilya]

That's called dedication

[@Grail_Knight]

The right one switched to green and the left one to red

[@jsmunroe]

Not everything this man says is quite accurate. The red/green desert color swap has nothing to do with the brain at all. It is cone fatigue. He is a salesman. When you watch a ted talk, see not as experts but as salesmen marketing their ideas. Question everything.

[@taitjones6310]

Brilliant. Another illusion

[@jsmunroe]

Yes. This is not an illusion at all. This is a physical change to the retina. You are actually seeing these colors. It's not happening in the brain.

[@johnpatmos1722]

"There is no inherent meaning in information." Will have to ponder that, but feel like he has just taken a logical leap.

[@caballus2005]

Probably he meant that it always need a context

[@djd829]

I like when he asked the audience, that there was definitely a majority that saw the gray one, but he was outed way too early in his talk to make his point: “so, pretty even split” Dude probably should have buttoned up his shirt one more.